Dishwashing machine



y 1941. w. ROCKE 2,250,314

DISHWASHING MACHINE Filed Oct. 26, 1956 2 Sheets-Slieet 1 TEFL MEN-FER E 7% WQ W| ATTLIJHNEYE July 22, 1941.

W. ROCKE DISHWASHING MACHINE Filed Oct. 26; 1936 2 Sheets-Sheet 2 2 ATTEDFENEYE Patented July 22, 1941 2 350,314" b I b I DISHWASHINGMACHINE wruim Rocke, South nndnidl a Application cameras, 193e, Serial'No'. 107,598

Claims.

This invention has reference to a machine for washing dishes and the like andhas for its principal object toprovide a dish washer having a novel means for circulating water around dishes placed in the machine in such a manner as to Disposed over the propeller assembly is the efliciently wash them. cover member 29 secured to the flared portion of Another object is to provide a machine of the part 20 by means of screws 30, it being spaced class described which includes means for circua small distance from the surface of part 20 as lating water in a receptacle in a turbulent manshown. v v ner, there being currents or streams projected The cover member is concaved in form and is onto and around the dishes in such a manner perforated as indicated in the several views. that all surfaces of each dish are subjected to v Secured to the inner surface of the bowl is a the action of the circulated water. series of curved deflectors 3| arranged in stag- A further object is to provide, in a dish washgered relation as shown in Fig. 1. ing machine, a novel pump means for circulating 5 A removable basket 32, having its bottom part water and a novel arrangement of parts which shaped to lie over cover 29 is disposed in the bowl direct the pumped water in such a manner as to as shown. circulate around and between the dishes and Operation of the device is as follows: return to the pump to be recirculated. The propeller 23 is obviously rotated at rela- Other objects will become apparent during tively high speed by the motor 26 to pump water perusal of the following description and accom upwardly and out through the opening between panying drawings in which: cover 29 andthe upper surface of part 20, also Fig. 1 is a sectional elevational view taken apoutwardly into the central portion of .the bowl proximately through the center of my device; through the perforations in the cover. The per- Fig. 2 is a sectional plan view taken on line forations are so dimensioned as to permit the 22 in Fig. l; flow of only a relatively small quantity of water Fig. 3 is an enlarged fragmental sectional eleand the capacity of the pump is made. such as-to vational view taken on line 3-3 in Fig. 1; maintain considerable pressure under the cover Fig. 1 shows the device as consisting of a bowl whereby the water is forced outwardly as noted, or tub l0 supported by any suitable means such and indicated by arrows, toward the sides of the as a skirt structure U, supported upon casters |2. bowl whereby it is deflected upwardly andin- The bowl III is afiixed in the skirt structure by wardly toward the center of the bowl. Those means of attachment or substantially tight conp t ons flowing over the deflectors 3| are detact at l3 and a cross member M to which a bot-' flected i relatively Small St eams so that the tom'portion l5 of the bowl structure is attached 5 general circulationof water toward the top of by the screws l6.

The bottom portion I5 is attached to the ,wall portion of the bowl by screws I! or any other suitable means.

The walls of the bowl are preferably arcuate in form and are turned inwardly at the top, the

a lower bearing for the shaft andprevents leakagefof waterfrom the bowl. The upperend of inner top edge being finished by an upturned beaded portion l8 adapted to receivea cover, [9.

To the bottom portion I5 is attached an upstanding part 20-, there being openings 2| through the base portion, see Fig. 2, to permit a free flow of water into the pump cavity 22. The upper portion is flared outwardly as shown.

In the cavity 22 there is disposed a pump mechanism consisting of helically arranged flights 23 mounted on a shaft 24 which passes downwardly through portion l5 and carries a pulley 25 on its lower end. The pulley has driving connection with a motor 26 through a belt 25 A conventional stuffing box assembly 21 forms the shaft is journalled in'a bearing formed in a cover number 29. See Fig. 3.

the bowl is modified and the general turbulence is increased. The deflectors may obviously be of any size, shape or arrangement as dictated by the reouirements of practical use.

The circulatory movements just described are obviously produced by the forcibly ejected stream of water over and across'the top of part 20. While the water is being pumped and circulated as described a like quantity is. being returned tothe propeller through the openings 2| and thus the water is continuously circulated within .the bowl in a lightly agitated state, over and around dishes disposed in the basket 32. Atthe same time the-water is ejected upwardly toward the under side of the dishes through the perforations in cover 29.

It will be apparent that the devices above described are adapted to circulate water for the purpose described, in a highly turbulent state whereby dishes may be thoroughlyand quickly washed without manipulation or contact with moving parts. Modifications of the structure described are obviously possible without alteration of the principle involved. I do not wish to be limited in structure or function except within the scope of the appended claims.

What I claim is:

1. In a dish washing machine, a tub having an inturned upper rim, a pump mounted centrally in the bottom of said tub, said pump having an inlet adjacent the tub bottom and a central discharge opening, a perforate circular cap spaced over said pump discharge, said cap forming a nozzle whereby wash water is directed under the cap circumferentially outwardly up the sides of the tub where it is cascaded inward by the inturned rim and through the perforations in the cap radially upward thereby to effect washing.

2. In a dish washing machine, a tub having an inturned upper rim, a lift pump having a housing mounted centrally in the bottom of said tub, said pump housing having a bottom inlet and a top vertical discharge opening, a perforate circular vertical discharge opening, a periorate circular cap spaced slightly above and over said vertical discharge opening, a dish rack supported above said cap, said cap forming a nozzle whereby wash water is directed circumierentially outward under the rack and up the sides of the tub where it is cascaded inwardly by the inturned rim of the tub and through the perforations in the cap radially upward through the rack thereby to efifect washing.

WILLIAM ROCKE. 

